/* Vaultmark website. Colours follow docs/DESIGN.md: "Midnight Vault" (dark) and "Daylight" (light).
   No web fonts are downloaded and no scripts run: the site makes no third-party requests. */

:root {
  color-scheme: dark light;
  --ink-950: #07090D;
  --ink-900: #0D1117;
  --ink-800: #151B24;
  --line: #232B37;
  --text-1: #E8E6E1;
  --text-2: #9AA3AF;
  --brass-400: #C9A45C;
  --brass-200: #E8D3A2;
  --seal: #5FB38A;
  --danger: #D9645A;
  --glow: rgba(201, 164, 92, 0.16);

  --serif: "Fraunces", "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --radius: 14px;
  --max: 1080px;
}

@media (prefers-color-scheme: light) {
  :root {
    --ink-950: #F3EFE7;
    --ink-900: #FAF8F3;
    --ink-800: #FFFFFF;
    --line: #D3CAB9;
    --text-1: #1B1E24;
    --text-2: #59616D;
    --brass-400: #83621F;
    --brass-200: #B98F3A;
    --seal: #2C7651;
    --danger: #B0372D;
    --glow: rgba(185, 143, 58, 0.18);
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background-color: var(--ink-950);
  background-image: url("assets/grain.png");
  background-size: 192px 192px;
  color: var(--text-1);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* The grain texture is very faint: dim it further by layering the ink on top. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: var(--ink-950);
  opacity: 0.97;
  z-index: -1;
  pointer-events: none;
}

a { color: var(--brass-400); text-underline-offset: 3px; }
a:hover { color: var(--brass-200); }
a:focus-visible, .button:focus-visible {
  outline: 2px solid var(--brass-400);
  outline-offset: 3px;
  border-radius: 6px;
}

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--ink-800);
  padding: 8px 14px;
  border-radius: 999px;
  z-index: 10;
}
.skip:focus { left: 12px; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--ink-950) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 5;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-1);
  text-decoration: none;
  font-family: var(--serif);
  font-size: 20px;
  letter-spacing: 0.02em;
}
.brand img { width: 30px; height: 30px; border-radius: 8px; }
.brand:hover { color: var(--text-1); }
.nav { display: flex; gap: 22px; font-size: 15px; }
.nav a { color: var(--text-2); text-decoration: none; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text-1); }

/* Hero */
.hero {
  text-align: center;
  padding: 88px 0 72px;
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 40px;
  width: 520px;
  height: 520px;
  transform: translateX(-50%);
  background: radial-gradient(circle, var(--glow) 0%, transparent 65%);
  z-index: -1;
  pointer-events: none;
}
.hero-icon {
  width: 132px;
  height: 132px;
  border-radius: 30px;
  border: 1px solid var(--line);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--ink-800) 60%, transparent);
}
.eyebrow {
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brass-400);
  margin: 28px 0 10px;
  font-weight: 600;
}
h1, h2, h3 { font-family: var(--serif); font-weight: 500; line-height: 1.2; letter-spacing: 0.005em; }
.hero h1 { font-size: clamp(36px, 6vw, 58px); margin: 0 auto 18px; max-width: 14ch; }
.lede { color: var(--text-2); font-size: 19px; max-width: 36rem; margin: 0 auto 32px; }

.button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  border-radius: 999px;
  background: var(--brass-400);
  color: var(--ink-950);
  font-weight: 600;
  text-decoration: none;
  font-size: 16px;
}
.button:hover { background: var(--brass-200); color: var(--ink-950); }
.button svg { width: 18px; height: 18px; }
.note { color: var(--text-2); font-size: 14px; margin-top: 14px; }

/* Promises strip */
.promises {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-900);
  margin-bottom: 96px;
}
.promise { padding: 22px 24px; display: flex; gap: 14px; align-items: flex-start; }
.promise + .promise { border-left: 1px solid var(--line); }
.promise strong { display: block; font-weight: 600; }
.promise span { color: var(--text-2); font-size: 15px; }

/* Icons: thin line icons, like Lucide in the app */
.ico {
  width: 22px;
  height: 22px;
  flex: none;
  stroke: var(--brass-400);
  stroke-width: 1.5;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.ico.seal { stroke: var(--seal); }

/* Sections */
section { margin-bottom: 96px; }
.section-head { text-align: center; max-width: 40rem; margin: 0 auto 40px; }
.section-head h2 { font-size: clamp(28px, 4vw, 38px); margin: 0 0 10px; }
.section-head p { color: var(--text-2); margin: 0; }

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.card {
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}
.card h3 { font-size: 21px; margin: 16px 0 6px; }
.card p { color: var(--text-2); margin: 0; font-size: 15.5px; }

/* "What others see" ciphertext illustration */
.cipher {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 20px;
  align-items: center;
}
.cipher .card { text-align: left; }
.bytes {
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-2);
  word-break: break-all;
  margin: 12px 0 0;
}
.label {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-2);
  font-weight: 600;
}
.label.seal { color: var(--seal); }
.arrow { color: var(--brass-400); }
.arrow svg { width: 34px; height: 34px; stroke: currentColor; stroke-width: 1.5; fill: none; }

/* Plans */
.plans { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; max-width: 820px; margin: 0 auto; }
.plan h3 { margin-top: 0; font-size: 24px; }
.plan .tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--brass-400);
  border: 1px solid var(--brass-400);
  padding: 2px 9px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.plan.pro { border-color: color-mix(in srgb, var(--brass-400) 55%, var(--line)); }
.plan ul { list-style: none; padding: 0; margin: 14px 0 0; }
.plan li { display: flex; gap: 10px; padding: 6px 0; color: var(--text-1); font-size: 15.5px; }
.plan li .ico { width: 18px; height: 18px; margin-top: 3px; }

/* FAQ */
.faq { max-width: 760px; margin: 0 auto; }
.faq details {
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--brass-400); font-size: 22px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { color: var(--text-2); margin: 10px 0 0; }

/* Legal pages */
.legal { max-width: 760px; margin: 0 auto; padding: 64px 0 96px; }
.legal h1 { font-size: clamp(34px, 5vw, 46px); margin: 0 0 8px; }
.legal .meta { color: var(--text-2); font-size: 15px; margin: 0 0 32px; }
.legal h2 { font-size: 25px; margin: 44px 0 10px; }
.legal h3 { font-size: 19px; margin: 26px 0 6px; }
.legal p, .legal li { color: var(--text-1); }
.legal ul { padding-left: 22px; }
.legal li { margin: 6px 0; }
.summary-box {
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-left: 3px solid var(--brass-400);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 0 0 12px;
}
.summary-box p { margin: 0; }
.summary-box ul { margin: 8px 0 0; }
.legal table { width: 100%; border-collapse: collapse; font-size: 15.5px; margin: 12px 0; }
.legal th, .legal td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.legal th { color: var(--text-2); font-weight: 600; font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase; }
.caps { text-transform: uppercase; font-size: 15px; letter-spacing: 0.01em; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 32px 0 44px; color: var(--text-2); font-size: 14px; }
.site-footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.site-footer nav { display: flex; gap: 20px; flex-wrap: wrap; }
.site-footer a { color: var(--text-2); text-decoration: none; }
.site-footer a:hover { color: var(--text-1); }

@media (max-width: 820px) {
  .grid, .promises, .plans { grid-template-columns: 1fr; }
  .promise + .promise { border-left: 0; border-top: 1px solid var(--line); }
  .cipher { grid-template-columns: 1fr; }
  .arrow { transform: rotate(90deg); justify-self: center; }
  .hero { padding: 60px 0 56px; }
  section, .promises { margin-bottom: 72px; }
}
@media (max-width: 480px) {
  .nav { gap: 14px; font-size: 14px; }
  .brand span { display: none; }
}